US3000185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for breaking suction between hydraulic soil and objects in contact therewith
Assignee: KERR MC GEE OIL IND Inc
•
Filing: 1958-03-14
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Granted: 1961-09-19
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Expires: 1978-03-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Emile J Brinkmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:19
CPC Classifications
E; E02; E02B; E02B17/00; E02B2017/0052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1045764A
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US1347688A
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US1594518A
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US1680372A
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US1681533A
Cited
US2169940A
Cited
US2858105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |